Breaking: #108148 - CDATA Sections In Fluid Templates No Longer Removed 

See forge#108148

Description 

Previous versions of Fluid and TYPO3 removed code wrapped in <![CDATA[ ]]> from template files altogether. This meant that it was possible to use CDATA to comment-out Template code. This is no longer possible, since CDATA sections are now interpreted by Fluid in a different way, see Feature: #108148 - Alternative Fluid Syntax for CDATA Sections.

Impact 

<![CDATA[ ]]> can no longer be used to comment-out code in Fluid template files.

Affected installations 

Installations that contain Fluid templates that use <![CDATA[ ]]> to comment-out code in Fluid templates. A deprecation is written to the deprecation log since TYPO3 13.4.21 if this is encountered in a Fluid template during rendering.

Migration 

To comment-out code in Fluid templates, the Comment ViewHelper <f:comment> should be used. Since TYPO3 13, potential Fluid syntax errors are ignored by these ViewHelpers, which allows commenting-out of invalid Fluid syntax.